What is the normal CD4-T cell range?

What is the normal CD4-T cell range?

• A. 500-1,500
• B. 200-500
• C. 1,000-2,000
• D. 50-500

Answer: (A)

CD4 T cells are helper immune cells measured as an absolute count per microliter of blood. In healthy adults, the typical reference range is about 500 to 1,500 cells/µL. This level indicates a normal, functioning immune system. Counts below this range reflect increasing immunosuppression and higher infection risk; for example, when CD4 counts drop below about 200 cells/µL, there is a markedly greater risk for opportunistic infections and AIDS-defining conditions in the context of HIV. Keep in mind that exact numbers can vary slightly by lab and population, and pediatric values are different. So the standard adult normal range is approximately 500–1,500 cells/µL.

CD4 T cells are helper immune cells measured as an absolute count per microliter of blood. In healthy adults, the typical reference range is about 500 to 1,500 cells/µL. This level indicates a normal, functioning immune system. Counts below this range reflect increasing immunosuppression and higher infection risk; for example, when CD4 counts drop below about 200 cells/µL, there is a markedly greater risk for opportunistic infections and AIDS-defining conditions in the context of HIV. Keep in mind that exact numbers can vary slightly by lab and population, and pediatric values are different. So the standard adult normal range is approximately 500–1,500 cells/µL.